Guillaume St-Onge

I am a Research Assistant Professor in the Department of Physics at Northeastern University, a member of the Roux Institute, and a core faculty member at the Network Science Institute. I will be transitioning to the position of Assistant Professor in the School of Electrical Engineering and Computer Science at the University of Ottawa in July 2026. Prior to this, I completed an M.Sc. and Ph.D. in Physics at Université Laval as part of the Dynamica Research Lab; I was a visiting graduate student at the Vermont Complex Systems Institute in the Joint Lab; and I was a postdoc in the MOBS Lab at the Network Science Institute in Boston.

My research centers on how contagions, such as infectious pathogens or social behaviors, spread through networks. I develop models and computational methods drawing on stochastic processes, dynamical systems, complex networks, and Bayesian inference. A selection of my work includes advancing theory and methods based on probability generating functions; predicting the spatial spread of disease; identifying when distinct contagion mechanisms yield equivalent phenomenology; forecasting epidemic time series in real time; and developing optimization and inference methods for global sentinel surveillance systems.